Linux MP launcher doesn't do anything

[WiserTixx]

Could you have a look at this post?

[Linux] SSL Certificate Error on Launcher Startup

long story short, beamMP is using root certificates that are SEVERELY out of date on arch linux (or vice versa, it doesnt matter), so your distro considers them as untrustworthy, at least for your certificate bundle. beamMP guys have been trying their best to let cloudflare change them (you should know, cloudflare are the bad guys here, because only just a few months ago we managed to update that goddamn root cert from 2007), but yeah, most likely that is not gonna happen. and its not…